Brazzaville Weather in September
In Brazzaville, September brings very high daytime temperatures around 32°C (90°F), with nights cooling to 22°C (72°F). Some rainfall is to be expected.
Rainfall in Brazzaville in September
You can typically expect 4 days of rain this month, averaging around 22 mm (0.9 in). Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.
Temperature in Brazzaville in September
September tends to be one of the perfect months in Brazzaville, with 32°C (90°F) in the afternoon and 22°C (72°F) overnight. Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.
Sunshine in Brazzaville in September
The month brings about 147 hours of sunlight, offering a comfortable mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Brazzaville.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Congo-Brazzaville , check out our Brazzaville's climate page.
Brazzaville Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
32°C (90°F)
Chance of Rain
13%
Precipitation
22 mm (0.9 in)
Rainy days
4 days
Humidity
71%
Sunshine
147 hours
Percentage Sunshine
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Brazzaville typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in September
Daily Historical Precipitation
46-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Brazzaville in September
Browse day-by-day weather records for Brazzaville spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Brazzaville historical weather extremes in September
Based on 34 years of weather observations in Brazzaville between 1991 and 2025, these are the recorded extremes.
- On September 13, 2021, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 22°C (72°F), recorded on September 6, 1991.
- Nighttime temperatures dropped to 17°C (63°F) on September 24, 1991, marking the coldest September night on record.
Best Places in Congo-Brazzaville in September
Find out more about the weather in Congo-Brazzaville and which places have the best travel conditions in this month. See all of Congo-Brazzaville in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Brazzaville in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Brazzaville in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Congo-Brazzaville , check out our Brazzaville's climate page.
Temperature Rainfall Sunshine Humidity
See the full Brazzaville climate overview or explore weather in Congo-Brazzaville .
